Question

3m+2m-7=0 solve by formula method

Answer 1

Answer:

5m-7=0

5m=0+7

5m=7

m=7/5 answer

Answer 2

Answer:

x= ( -1+√22)/3    or   x= (-1-√22)/3

Step-by-step explanation:

Did you mean: 3m²+2m-7=0?

On comparing it with ax²+bx+c=0,

a=3, b=2, c= -7

Now,

b²-4ac= (2)²-4*3*-7

=4+84=88

x=  -b±√(b²-4ac)/2a

x=  -2±√88/6

x=  -2-√88/6 or x=-2+√88/6

x=  (-2-2√22)/6 or x=(-2+2√22)/6

x= ( -1+√22)/3    or   x= (-1-√22)/3